heres the thing, there is no way for sure to know is the First video is at 150mph or Way faster, those facts are hard to know for sure, it could be MUCH faster shot out of an air cannon as it possibly was for the "test". Also all other videos are a a MUCH faster frame rate, The Original posters video says its at 70,000fps and the other posted videos are between 600-4000 if that, the difference there is Huge.
Fair points, however I would counter by saying if the first video is way faster than 150mph, then it's fake, because it's insinuating that that is how a golf ball would react at 150mph. As to the frame rate one, in every shot of the ball after leaving the clubface, it's round. If it's just because the frame rate is lower and the wilder variations have been missed between images, that's an incredible coincidence that no variation was picked up at all on any of the other screen shots.